Door stop



Nov. 28, 1961 R. w. AHLQUIST 3,010,142

DOOR STOP Filed Feb. 2, 1959 1 INVENTOR.

Passe; 1, M 6 /11. 410/197 HTTOF/VE) United estates 3,010,142 DOOR S'IGPRussell W. Ahlquist, New Britain, Conn, assignor to The America HardwareCorporation, New Britain, Coma, a corporation of Connecticut Filed Feb.2, 1959, Ser. No. 790,492 Claims. (Cl. 16-86) This invention relates toa door stop and more particularly to a door stop of the type adapted tobe mounted on a floor for engagement by the lower edge of a door tolimit its opening movement.

The primary object of the present invention is to provide a door stophaving novel means for fastening the resilient cushioning member thereofto the floor mounted base member.

A further object of the invention is to provide a door stop which isdesigned in such a way that it can be manufactured at considerably lesscost than similar types of door stops presently available.

Further objects and advantages of this invention will be more clearlyunderstood from the following description and the accompanying drawingin which:

FIG. 1 is an exploded, isometric view, illustrating the parts of a doorstop embodying my invention.

FIG. 2 is a sectional, elevational view of the floor mounted base memberof the door stop.

FIG. 3 is a bottom view of said base member.

FIG. 4 is a sectional, elevational view illustrating the resilientcushioning member of the door stop attached to the base member.

FIG. 5 is a bottom view of illustrated in FIG. 4.

FIG. 6 is a sectional, elevational view illustrating a modified form ofthe door stop.

FIG. 7 is an isometric view of the retaining clip used in the modifieddoor stop of FIG. 6.

The door stop illustrated in FIGS. 1 to 5 includes a base member 5 whichis adapted to be mounted on a floor and is preferably formed in onepiece by a suitable casting process. Said base member includes acircular plate portion 6 having an integral, hollow dome 7 formed at oneside thereof. The dome has a spherical wall 8 forming one end of thebase member 5 and an upstanding wall 9 which extends transversely acrossthe plate portion 6 substantially diametrically thereof, said wallsdefining a cavity 10 which opens to the underside of the plate portion6.

The upstanding wall 9 of the dome 7 has a notch 11 formed therein whichextends upwardly above said plate portion 6 from The plate portion 6thus has a rear edge 6-a extending across said notch 11 which definesthe lower side of a rectangular opening 12 in said wall 9 whichcommunicates with the cavity 10.

The base member 5 is provided with a positioning stud 13 which is castintegrally with the spherical wall 8 of the dome 7 and projectsdownwardly from the cavity 10 below the underside of the plate portion6. A countersunk hole 14 is formed in the plate portion 6 in axial aignment with said positioning stud 13 for the reception of a screw orother such fastening element for securing the base member to the floor.

It will be apparent to those skilled in the art, that the particulardesign of the base member 5 permits manufacture thereof by conventionalcope-and-drag or shell molding processes without requiring the use of acore in the mold, thereby materially reducing the cost of producing thedoor stop. The exterior shape of the base member may be formed in onehalf of the mold, and the interior shape, including a projection forforming the notch 11, may be formed in the other half of the mold.

the assembled door stop the underside thereof as shown in FIG. 2. t

3,919,142 Patented Nov. 28, 1961 ra d The fact that a core is not usedand the draw is in the direction of the notch 11 permits formation ofthe countersunk hole 14 in the molding process, thereby eliminatingsubsequent machining operations and further reducing the cost ofmanufacture.

The base member 5 supports a resilient cushioning member 15 which ispreferably made of rubber or like material and includes a head portion16, whichis substantially in the form of a right cylinder, and arectangular shank portion 17 which extends rearwardly from the headportion 16 and is of a size and shape to closely fit the opening 12. Thehead 16 is larger than the shank, thus providing a flange 18 around theopposite sides and the top of said shank adapted to engage the outersurface of the wall 9 around the opening 12 therein as illustrated inFIG. 4. The flange is inclined rearwardly relatively to the verticalfront surface of the head to conform to the inclination of thetransverse wall 9 which is provided for convenience in casting. Theshank portion 17 of the cushioning member is of a length to extendthrough the opening 12 and into the cavity 10 of the base member and isprovided with a pair of spaced, vertical holes 19-19 therethroughadjacent the inner side of the Wall 9.

The resilient cushioning member 15 is secured to the base member 5 bymeans of a retaining clip 20. Said clip is constructed from a singlepiece of wire and consists of a pair of spaced, parallel, L-shaped legs21-21 having vertical portions 22-22 and horizontal portions 23-23 whichare joined together by a bar portion'24. The vertical portions 22-22extend through the holes 19-19 in the shank 17 and are of such lengththat the clip projects from the upper and lower sides of the shank. Theupper free ends of the legs 21-21 engage the inner side of the wall 9adjacent the edge of the openingll, and the horizontally offset barportion 24 of said clip is adapted to engage the edge 6-a of the plateportion 6 to thereby lock the resilient cushioning member to the basemember as shown in FIGS. 4 and 5.

In order to assemble the door stop, it is only necessary to insert theshank 17 of the cushioning member into the opening 12 in the wall 9 ofthe base member and position the flange 18 on the cushioning memberagainst said wall. The vertical portions 22-22 of the legs on theretaining clip 20 are then inserted into the holes 19-19 in said shankfrom the underside of the base member and said clip is positioned asillustrated in FIG. 4 to lock the cushioning member to the base memberas above described.

The door stop is mounted on a floor by merely drilling a hole therein atthe proper location to receive the positioning stud 13. Said stud isthen inserted into the hole and after the stop is properly oriented, itis fastened in place with a screw which is driven through thecountersunk hole 14 into the floor.

It will be noted from FIG. 4, that the lower horizontal end portion ofthe retaining clip 20 provides a foot which is disposed closely adjacentthe underside of the base member so that said retaining clip isprevented from coming out of the holes in the shank through engagementof its said lower end with the floor upon which the door stop ismounted.

In FIG. 6 of the drawing, I have illustrated a modified form of doorstop for use when a door has a threshold thereunder and its lower edgeis consequently a greater distance from the floor than the lower edge ofa door not having a threshold. Said door stop, indicated at 5a, isessentially the same as the door stop 5 above described except that theplate portion 6b thereof is provided with a depending annular skirt 25which increases the height of the plate portion and therefore elevatesthe cushioning member 15 to a position wherein it will be engaged by thelower edge of the door.

The retaining clip 26 (see FIG. 7) used in the modified door stop a isconstructed from a single piece of wire formed to provide a U-shapedmember having spaced parallel legs 2727 which are interconnected attheir lower ends by an integral bar portion 28. The lower verticalportions of said legs are forwardly offset from the upper verticalportions thus providing a knee 29 on each of said legs which isengageable with the edge 6c of the plate portion of the door stop, asshown in FIG. 6, and cooperates with the upper free ends of said legs tolock the cushioning member in position. The bar portion 28 is disposedsubstantially flush with the underside of the skirt 25 when the partsare assembled and thus forms a foot which is engageable with the floorupon which the door stop is mounted so that the retaining clip cannotbecome detached from the cushioning member.

I claim:

1.. A door stop comprising a one-piece base member including a plateportion adapted to be mounted on a floor and an integral hollow domeextending upwardly from said plate portion and including an upstandingWall extending transversely across said plate portion, said dome forminga cavity having a mouth defined by the lower marginal edge portions ofsaid dome and said Wall and opening to the underside of said plateportion, said upstanding Wall having a notch extending upwardly thereinfrom the underside of said plate portion which forms an extension ofsaid cavity and said mouth and terminates in an abutment, said notchbeing at least as wide at its lower end as it is at its upper end, andproviding an opening in said said wall communicating with said cavity, aresilient cushioning member mounted on said base member, said cushioningmember having a head portion disposed against said wall in engagementwith the outer face of its marginal edge portions adjacent said openingand a shank extending from said head portion through said opening andinto said cavity, and a retaining member extending through the portionof said shank in said cavity and engaging said abutment and an innerface of said marginal edge portions adjacent the opening in said wall,whereby to lock said cushioning member to said base member.

2. The subject matter set forth in claim 1 wherein said retaining membercomprises an L-shaped retaining clip having vertical portions extendingupwardly through said shank and engaging said inner face of saidmarginal edge portions adjacent the opening in said wall, and ahorizontal lower portion connecting said vertical portions and engagingsaid abutment.

3. The subject matter set forth in claim 1 wherein the portion of saidshank within said cavity is provided with spaced parallelholes'extending upwardly therethrough and said retaining member is of aU-shape having spaced parallel legs extending through said holes andprojecting from the opposite sides of said shank into engagement withsaid abutment and said inner face of said marginal edge portionsadjacent the opening in said wall.

4. A door stop comprising a base member including a plate portionadapted to be mounted on a floor, said plate portion having an annulardepending skirt and an integral hollow dome extending upwardly therefromand defining a cavity opening to the underside of said plate portion,said dome having an upstanding wall extending transversely across saidplate portion and containing an opening therethrough communicating withsaid cavity, a resilient cushioning member mounted on said base member,said cushioning member having a head disposed against the outer side ofsaid wall in engagement with the outer face of its marginal edgeportions adjacent said opening and a shank extending from said headportion through said opening and into said cavity, the portion of saidshank within said cavity having openings extending upwardlytherethrough, a retaining member extending upwardly through saidopenings and having portions projecting from the opposite sides of saidshank into engagement with the adjacent inner face of said marginal edgeportions whereby to lock said cushioning member to said base member,said retaining member having a depending portion terminating adjacentthe underside of said skirt and engageable with the floor upon which thedoor stop is mounted to prevent disengagement of said retaining memberfrom said shank.

5. A door stop comprising a one-piece base member including a plateportion adapted to be mounted on a floor and an integral hollow domeextending upwardly from said plate portion and including an upstandingwall extending transversely across said plate portion, said dome forminga cavity having a mouth defined by the lower marginal edge portions ofsaid dome and said wall and providing an open bottom thereon, saidupstanding wall having a notch extending upwardly therein from theunderside of said plate portion which forms an extension of said cavityand said mouth and terminates in the plane of the outer face of theupstanding wall, said notch being at least as wide at its lower end asit is at its upper end and providing an opening in said wallcommunicating with said cavity, said hollow dome having a positioningstud therein depending from said dome and extending below said openbottom, the top and side of said stud being integrally formed with thewall of said dome, a resilient cushioning member on said base member,said cushioning member having a head portion disposed against saidupstanding wall in engagement with the outer face of its marginal edgeportions adjacent said opening and a shank extending from said headportion through said opening and into said cavity on opposite sides ofsaid positioning stud, and means engaging said shank for fastening saidresilient cushioning member to said base member.

References Cited in the file of this patent UNITED STATES PATENTS2,311,278 Johnson Feb. 16, 1943 2,715,242 Smith Aug. 16, 1955

